Introduction

This webpage hosts summary plots for Rosenberger and Bottoms (in prep). Analyses use data from DFO’s New Salmon Escapement Database Systems (NUSEDs) up to 2022.

Escapement plots

Escapement plots over time, by species, by Conservation Unit. Colours represent whether or not the stream qualified for analysis in this study. Solid vertical lines denote the establishment of the Great Bear Rainforest Special Protection Area (GBR SPA) in 2007 and dashed vertical lines represent the cutoff for the current generation included in the analyses.

Summary Table

Species Included in analysis Number of streams
Chinook Y 70
Chum Y 198
Coho Y 202
Pink (Even years) Y 193
Pink (Odd years) Y 202
Sockeye Y 48
Chinook N 48
Chum N 278
Coho N 296
Pink (Even years) N 275
Pink (Odd years) N 252
Sockeye N 69

Chinook

Chum

Coho

Pink (Even years)

Pink (odd years)

Sockeye

Trend Ratios

This section shows how trends compare across periods. Comparison periods are defined as:

trnd.cgen.all:

trnd.cgen.pre:

trnd.post.all:

trnd.post.pre:

All species

Comparisons across all Conservation Units

Chinook

Chum

Coho

Pink (Even years)

Pink (Odd years)

Sockeye